rsa_get_ctx_params
static OSSL_FUNC_asym_cipher_get_ctx_params_fn rsa_get_ctx_params;
(void (*)(void))rsa_get_ctx_params },
{ OSSL_FUNC_SIGNATURE_GET_CTX_PARAMS, (void (*)(void))rsa_get_ctx_params },
(void (*)(void))rsa_get_ctx_params }, \
static OSSL_FUNC_signature_get_ctx_params_fn rsa_get_ctx_params;